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SECTION 6: FLUE INSTALLATION

17 of 85

SECTION 6: FLUE INSTALLATION

6.1 Flue Installation

The flue must terminate outside of the building.

Flues and air intakes must be a fully sealed system

and correctly sized for the model. See Page 8,

Section 4.1. Flues should be assembled as on Page

18, Figure 5 through Page 21, Figure 13. The joints

between the flue and the roof or wall must be

properly sealed. If the flue passes through a wall or

ceiling of combustible material it must be enclosed

by a sleeve of non-combustible material and be

separated from the sleeve by at least a 25 mm (1")

air gap.

For double walled flue pipe conforming to BS 715,

the 25 mm (1") separation distance should be

measured from the outside surface of the inner liner.

For double wall flue pipe conforming to BS 4543-2

and 3, the external skin and air gap constitutes

insulation to a standard where no extra clearances

to combustibles material is required other than

normal installation tolerances.

Flues must be ade

quately supported so that the

heater does not bear the weight of the flue.

For straight and offset flue termination, See Page

18, Figure 5 and Figure 6.

Horizontal Flue Installation

Horizontal flue should be fitted ensuring a slight

gradient approximately 2° towards the terminal.

Where condensation is likely, traps should be

included to encourage the condensate to flow freely

to a point from which it may be released, preferably

into a gully. Condensate mu st not be allowed to

drain back into the heater as this could result in

corrosion and damage.

The condensate pipe from the flue to the disposal

point must be made from corrosion resistant pipe of

not less than 25 mm (1") internal diameter.

90° bends and horizontal pipe must not be used

in flues except for the immediate connection to a

room-sealed heater [1 m (3.5') max]. 135° bends

are used to offset the flue as on Page 18, Figure 6.

If condensation is likely to occur in the flue, then

provision should be made for drainage.

When designing the flue system, the prevention of

the formation and entrapment of condensation must

be a key consideration.

Only single wall stainless steel flue is to be used

on oil-fired cabinet heaters.

WARNING

Carbon Monoxide Hazard

Heater must be vented.

Heater must be installed according to the

installation manual.

Failure to follow these instructions can result

in death or injury.

WARNING

Fire Hazard

Keep all flammable objects, liquids and

vapours the minimum required clearances to

combustibles away from heater.

Some objects will catch fire or explode when

placed close to heater.

Failure to follow these instructions can result

in death, injury or property damage.

WARNING

Cut/Pinch Hazard

Wear protective gear during installation,

operation and service.

Edges are sharp.

Failure to follow these instructions can result

in injury.

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